<a class="link" rel="nofollow" target="_blank" href="http://www.popsugar.com/fitness/5-Minute-Ab-Workout-Video-39785281"></a><p>We are so over crunches! So work your abs with these belly-flattening alternatives. This five-minute workout is loaded with seriously effective moves, including a killer plank circuit. You can do this workout on its own or after a cardio session. We love it after a run!</p>
